Affiliation:
1. Newmont Exploration Limited, Danbury, Connecticut 06810
Abstract
Using the formulation for a layered sphere in a plane wave field and specializing to the quasi‐static range, we have obtained a solution for the electromagnetic response of a conductive sphere surrounded by a shell which is also conductive. The mathematical model is intended to simulate the geological situation of a massive sulfide body enclosed by a halo of disseminated sulfides. The in‐phase and quadrature responses are presented as two‐dimensional functions of the sphere and shell induction numbers and as one‐dimensional functions of frequency for particular cases. It is demonstrated that, depending upon the respective induction numbers, the sphere and shell may respond separately in different ranges of frequency.
Publisher
Society of Exploration Geophysicists
Subject
Geochemistry and Petrology,Geophysics
Cited by
17 articles.
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